package com.homework;

public class TestMain {
    public static void main(String[] args) {
        Pair<String, Integer> pair = new Pair<>("年龄", 20);
        System.out.println("交换前：" + pair);
        pair.swap();
        System.out.println("交换后：" + pair);

        Cache<String, String> cache = new Cache<>();
        cache.put("name", "张三");
        cache.put("id", "20260001");
        System.out.println("缓存获取name：" + cache.get("name"));
        System.out.println("缓存是否包含id：" + cache.containsKey("id"));
    }
}